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/*
* Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/sizes.h>
#include <mach/init.h>
#include <mach/sg-regs.h>
int proxstream2_memconf_init(const struct uniphier_board_data *bd)
{
u32 tmp;
unsigned long size_per_word;
tmp = readl(SG_MEMCONF);
tmp &= ~(SG_MEMCONF_CH2_SZ_MASK | SG_MEMCONF_CH2_NUM_MASK);
switch (bd->dram_ch2_width) {
case 16:
tmp |= SG_MEMCONF_CH2_NUM_1;
size_per_word = bd->dram_ch2_size;
break;
case 32:
tmp |= SG_MEMCONF_CH2_NUM_2;
size_per_word = bd->dram_ch2_size >> 1;
break;
default:
pr_err("error: unsupported DRAM Ch2 width\n");
return -EINVAL;
}
/* Set DDR size */
switch (size_per_word) {
case SZ_64M:
tmp |= SG_MEMCONF_CH2_SZ_64M;
break;
case SZ_128M:
tmp |= SG_MEMCONF_CH2_SZ_128M;
break;
case SZ_256M:
tmp |= SG_MEMCONF_CH2_SZ_256M;
break;
case SZ_512M:
tmp |= SG_MEMCONF_CH2_SZ_512M;
break;
default:
pr_err("error: unsupported DRAM Ch2 size\n");
return -EINVAL;
}
if (size_per_word)
tmp &= ~SG_MEMCONF_CH2_DISABLE;
else
tmp |= SG_MEMCONF_CH2_DISABLE;
writel(tmp, SG_MEMCONF);
return 0;
}
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